KEEHO is the first waypoint on J545 that enters US Airspace from Ontario. JDB (Dryer VOR) is in Cleveland. Continuing down the route, SZW is Seminole VOR in Tallahassee. J41 follows the Gulf Coast of Florida down to RSW, which is near Ft. Myers. MTH is a NDB on the Florida Keys, which is the last point in US Airspace, where it then joins G448 into international airspace again, which is a straight shot into Cuba. If this is indeed the route, you would think that whichever flight he is on would avoid CONUS airspace altogether, despite not entering the US. Heading down through Bermuda or Nassau would be safer.